Throttle for carbureters.



A. C. STEWART.

THROTTLE FOB. GARBURETERS. APPLIUATION FILED ooT.1o, 1910.

L, Patented June 17, 1913.

naaien THRTTLE FOR, CARBURETER Specincatou of Letters atente Patented June it?, tm

'Application filed October w, mit). serial Ito. 586,3E'.,

To all 'whom if may concern Be it known that L Leann C., STEWART,

a citizen of the United States, residing at Los' Angeles, in the count@T of Los Angeles and Stute of California, have invented a new and useful Throttle for Carbureters, of which the following is a specification.

This invention relates to throttlcs for con,- trolling the passage of mixture from a curbureter to an. integral combustion engine, and it 'relates particularly to the class of such devices wherein a chamber is provideel between the carhureter and the throttle outlet, for example, for applying an additional quant-ity of heat totthe mixture as it passes to antl through the throttle. Such construction is especially adapted for use with the heavy oils, it being necessary in such case to provide anadolitional quantity lof heatl to vaporize the oil. lilith such a construction the heating capacity of the chamber is adjusteti or adapted for the ordinary running conditions, with. the yconsequence that in startingor stopping, the tiow, with l the throttle nearly closed, there is a tendency to accumulation of oil in said chamber by reason of the decreasea suction therethrough, and when the throttle is opened more widely there results a sudden increase in the amount et oil taken up by reasonot' this accumulation of oil in said chamber anti the increased suction brought thereon.

rl'he main object of the invention is to provide for withdrawing such oil from the heating chamber at times when the throttle is closed.

Another object of theinvention is to provie a heating chamber, for the above stated purpose, of improved construction.

rEhe accompanying drawings illustrate the invention, and referring thereto: Figure l is a vertical .section of the throttle, anti showing the Yconnection to the carburetor. Fig, 2 1s a transverse section on line in Fig. l., Fig, 3 is a vertical section showing a modified form of the invention.y

l designates the carburetor which may be of anyA usual or suitable construction having; outlet 2 connected to the heating chamber 3 which .communicates 'with the throttle chainbei 1-, an outlet pipe 5 being connected; to, said throttle chamber and. leading to the internalfcombustion engine to be supplied with mixture. A. chamber G is providetl adjacent to the chamber 3, for example, directly-'beneaththe same, saitl chamber 'G being providecl with means for supplying heat thereto, for example, a pipe i communicat-ing with exhaust of the engine, or With other source of heat, and :in outlet means Q. The licor or bottom ot the chamber 3, which is'directly above the chamber G, is preferably corrugated or` transversely groovect, shown at 9, to increase the evaporative effect on the yoil and rcrluce to a minimum the tendency of the oil to collect thereon.

'lfhe throttlel() is pivotcti at l0v in the throttle chamber 4:, so to be movable to open and close the communication through the throttle chamber, anti incas are proviolett for est:ablishingl connection from the lower part oit' the chamber 3 to the portion o? the throttle chamber on the out-let side of the throttle.. ln the forni shown in Fig'. l, said means consists of a tube l2 ezvtcntliny through the throttle valveand nearly to .the bottoni of the chamber .3, the umoer end ot said. tube l2 extending" into the throttle chamber e above the throttle valve, so that when the throttle is closed the suction from the outlet 5 may draw mixture through eaicl tube andsuck un any oil which nuev have collecteci in the bottoni ot chamber it To insure passage of the oil vto the tube 12, a longitndinah gimove le may be provided extending` thro-ugh all of the coi'rugations 9 and tlirectlv beneath the tube 12.

ln. the forno of the invention shown in lug, the communication from the lower part of the chamber 3 to the upper part of thev throttle chamber is provided by hyiiass tube lli extending into the sa'icl portions oi saiglcharnbei's, said tube beine' of suticientlv small cross section to be Without ina terial eliect'on the amount of mixture passing, but providing for the suction of the oil troni the lower part of the chamber 3 to the throttle outlet under the. increased condition of suction produced when the throttle is closed and the engine is still running.

The throttle .chamber 4 may be provhlecl withcorrugations or ridges ft on its Walls to increase the evaporative effect or refluce to a minimum the condensing effect thereon L A` throttle for carbureters comprising a throttle chamber, a heating chamber coniinunicatine7 with said throttle chamber, means for connection, of the carburetor to said heating chamber, means for applying' heat to A saicl 'heating chamber, a throttle valve in said throttle chamber, and a con nection from the throttle chamber on the outlet side of the throttle valve to the lower part of the heating chamber.

2. A throttle for carbureters comprising a throttle chamber, an oil collecting charnber communicating with said throttle chamloer, meansfor connection of the carbureter to said oil collecting chamber, a throttle valve in said 'throttle chamber, and a connection from the throttle chamber on the outlet side of the throttle Valve to the lower part of the oil collecting chamber, consiSting of a tuloe connected to and extending through the throttle Valve.

3. A. throttle for carbureters comprising a 'throttle chamber, a heating chamber communicating With said throttle chamber,

neogeo@ means for connection of the carhnreter to said heating chamber, means for applying heat to said heating chamber, a throttle valve in said throttle chamber, and a connection from' the throttle chamber on the outlet side of the throttle valve to the lower part of the heating chamber, saidheating chamber having corrugations in its bottom for the purpose set forth.

ln testimony Whereol have hereunto set my hand at Los Angeles, California, this 3rd day of October 1910.

ALFRED C. STEWART.

ln presence of* ARTHUR P. KNIGHT, FRANK L. A. GRAHAM. 

